Failure with the new triphasic oral contraceptive Logynon.
D000328:Adult; D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004338:Drug Combinations; D004997:Ethinyl Estradiol; D019304:Ethinyl Estradiol-Norgestrel Combination; D005260:Female; D006801:Humans; D009644:Norgestrel; D011247:Pregnancy
D003276:Contraceptives, Oral; D003277:Contraceptives, Oral, Combined; D004338:Drug Combinations; D009644:Norgestrel; D004997:Ethinyl Estradiol; D019304:Ethinyl Estradiol-Norgestrel Combination